thermostat/pytec/tecQT.py

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from pyqtgraph.Qt import QtGui, QtCore
import numpy as np
import pyqtgraph as pg
from pytec.client import Client
rec_len = 1000
refresh_period = 20
channel_data = [{
'adc': np.zeros(rec_len),
'sens': np.zeros(rec_len),
'temperature': np.zeros(rec_len),
'i_set': np.zeros(rec_len),
'pid_output': np.zeros(rec_len),
'vref': np.zeros(rec_len),
'dac_value': np.zeros(rec_len),
'dac_feedback': np.zeros(rec_len),
'i_tec': np.zeros(rec_len),
'tec_i': np.zeros(rec_len),
'tec_u_meas': np.zeros(rec_len),
'interval': np.zeros(rec_len),
} for _ in range(2)]
tec = Client()
app = pg.mkQApp()
mw = QtGui.QMainWindow()
mw.setWindowTitle('Thermostat Control Panel')
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mw.resize(1024,800)
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cw = QtGui.QWidget()
mw.setCentralWidget(cw)
l = QtGui.QVBoxLayout()
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layout = pg.LayoutWidget()
l.addWidget(layout)
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cw.setLayout(l)
pg.setConfigOptions(antialias=True)
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temp0plot= pg.PlotWidget(title='Channel 0 Temperature')
layout.addWidget(temp0plot, 1, 1)
temp1plot = pg.PlotWidget(title='Channel 1 Temperature')
layout.addWidget(temp1plot, 2, 1)
current0plot = pg.PlotWidget(title='Channel 0 Current')
layout.addWidget(current0plot, 1, 2)
current1plot = pg.PlotWidget(title='Channel 1 Current')
layout.addWidget(current1plot, 2, 2)
temp0curve = pg.PlotCurveItem(pen=({'color': 'r', 'width': 1}))
temp1curve = pg.PlotCurveItem(pen=({'color': 'r', 'width': 1}))
tecI0curve = pg.PlotCurveItem(pen=({'color': 'r', 'width': 1}))
tecI1curve = pg.PlotCurveItem(pen=({'color': 'r', 'width': 1}))
Iset0curve = pg.PlotCurveItem(pen=({'color': 'g', 'width': 1}))
Iset1curve = pg.PlotCurveItem(pen=({'color': 'g', 'width': 1}))
temp0plot.addItem(temp0curve)
temp1plot.addItem(temp1curve)
current0plot.addItem(tecI0curve)
current0plot.addItem(Iset0curve)
current1plot.addItem(tecI1curve)
current1plot.addItem(Iset1curve)
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temp0legend = temp0plot.getPlotItem().addLegend(brush=(50,50,200,150))
temp0legend.addItem(temp0curve, 'feedback')
temp1legend = temp1plot.getPlotItem().addLegend(brush=(50,50,200,150))
temp1legend.addItem(temp0curve, 'feedback')
current0legend = current0plot.getPlotItem().addLegend(brush=(50,50,200,150))
current0legend.addItem(tecI0curve, 'feedback')
current0legend.addItem(Iset0curve, 'setpoint')
current1legend = current1plot.getPlotItem().addLegend(brush=(50,50,200,150))
current1legend.addItem(tecI1curve, 'feedback')
current1legend.addItem(Iset1curve, 'setpoint')
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cnt = 0
time_stamp = np.zeros(rec_len)
def update(n):
for data in tec.report_mode():
ch = data[n]
for tag, seq in channel_data[n].items():
if tag in ch:
v = ch[tag]
if type(v) is float:
if cnt == 0:
np.copyto(seq, np.full(rec_len, v))
else:
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seq[:-1] = seq[1:]
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seq[-1] = v
if quit:
break
return
def updateData():
global cnt
update(0)
update(1)
cnt += 1
time_stamp[:-1] = time_stamp[1:]
time_stamp[-1] = cnt * refresh_period / 1000
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temp0plot.setRange(xRange=[(cnt - rec_len) * refresh_period / 1000, cnt * refresh_period / 1000])
temp1plot.setRange(xRange=[(cnt - rec_len) * refresh_period / 1000, cnt * refresh_period / 1000])
current0plot.setRange(xRange=[(cnt - rec_len) * refresh_period / 1000, cnt * refresh_period / 1000])
current1plot.setRange(xRange=[(cnt - rec_len) * refresh_period / 1000, cnt * refresh_period / 1000])
temp0curve.setData(x = time_stamp, y = channel_data[0]['temperature'])
temp1curve.setData(x = time_stamp, y = channel_data[1]['temperature'])
tecI0curve.setData(x = time_stamp, y = channel_data[0]['tec_i'])
tecI1curve.setData(x = time_stamp, y = channel_data[1]['tec_i'])
Iset0curve.setData(x = time_stamp, y = channel_data[0]['i_set'])
Iset1curve.setData(x = time_stamp, y = channel_data[1]['i_set'])
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## Start a timer to rapidly update the plot in pw
t = QtCore.QTimer()
t.timeout.connect(updateData)
t.start(refresh_period)
mw.show()
if __name__ == '__main__':
pg.exec()